Producer and regenerative furnace.



J. & W. STEWART & R. P. BETHELL.

PRODUCER AND REGENERATIVE FURNACE.

APPLICATION FILED JULY 14, 1911.

31 mg 1 0 Patented June 2, 1914.

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I ZAM {aim/ML; 6 m @64 J. (In W. STEWART & R. 'P. BETHELL.

PRODUCER AND REGENBRATIVE'FURNAGB.

APPLICATION FILED JULY 14,1911.

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COLUMBIA PLANDGRAPH CO..WASHINGTON. 11,6.

J. & W. STEWART 5 R. P. BETHBLL. PRODUCER AND EBGENERATIVE FURNACE.

APPLICATION FILED JULY 14,1911. 1 9 91 m Patented June 2, 1914,

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UNITED STATES IiTENT JOHN STEWART, F GOIDNOR PARK, ENGLAND, WILLIAM STEWART, 0F MOTHERWELL, SCOTLAND, AND ROBERT PETER BIETI'IELL, OF \VALSALL, ENGLAND.

PRODUCER AND REGENERATIVE FURNACE.

Specification of Letters Patent.

Patented June 2, 191 1..

To all whom it may concern Be it known that we, J OHN Srnwxiu'r, VILLIAM STEWART, and Ronnn'r PETER BETHELL, subjects of the King of Great Britain, and residents of Codnor Park, in the county of Derby, England, of Motherwell, in the county of Lanai-k, Scotland, and of lValsall, in the county of Stafford, England, respectively, have invented new and useful Improvements in Producers and Regenerative Furnaces, of which the following is a specification.

This invention relates to improvements in the construction arrangement and combination of a two chamber gas producer with a regenerative furnace and regenerator chambers and has for its object the construction arrangement and combination of the parts in such a manner that the direction of the draft through the furnace is reversed by reversing the direction of the draft through the producer.

In the drawings :Figure 1 is a plan, partly in section, of a producer, furnace, and connected parts as constructed and arranged according to this invention. Fig. 2 is a longitudinal sectional elevation of the same, and Fi 3 is a broken transverse sectional elevation of the same.

The gas producer used in connection with this invention has two chambers 1 and 2 which are connected below the midwall 3 and are in direct communication with. a water bosh 1, which may be provided with a fixed or movable grate as indicated at so. At the bottom of the midwall 3 there is a water cooled air, or air and steam, inlet pipe 5 which has suitably disposed openings through which air, or air and steam, is admitted to the lower part of the producer. In the back wall of each of the chambers 1 and 2 there are gas outlets 6, Fig. 3, which open into valve chambers T and 8 from which there are gas passages 9 and 10 leading to opposite ends of the furnace 11. In connection with each of the gas passages 9 and 10 there are valves 12, which are preferably water cooled, and are pivotally con nected to the operating lever 13 by screwed rods 1 1 which are provided with tapped handles 15 so that the relative positions of the gas valves can be adjusted, and so that both. of the passages 9 and 10 can be opened or closed at the same time if required, as when the appa atus is closed. down. The lever 13 is preferably fulerumed at or near its center in a standard that rises from the top of the gas producer. At the top of each of the chambers 1 and 2 there is an air inlet pipe 16 provided with a hinged cover 17 which is connected by the lever 18 and link 19 to the steam jet 20. This jet 20 is carried by the barrel 21 of a plug cock and is fitted to turn on a fixed plug which is connected to the steam supply pipe 22; The steam jet barrel 21 is attached to a shaft which is operated from the lever 13 through a link 21, the parts being so arranged thatwhen the gas outlet to one of the producer chambers is closed, the air inlet and steam jet to the same chamber are opened, and

25 which has a suitable cover and may be of any usual type. For operating the lever 13 its axle is provided with a lever 26 which is connected by a link 27 to a lever 28 which is suitably pivoted and so a1 anged that it can readily be actuated by the attendant.

The regenerative furnace 11 is built according to any suitable type and is provided with openings, doors and other usual and necessary fittings.

The regene 'ator chambers 29 and 30 are built according to the usual practice and arranged in any convenient positions relatively to the furnace 11. The chamber 29 has a passage 81leading to one end of the furnace 11 and the chamber 30 has a corresponding passage 32 which leads to the opposite end of the furnace. The air is directed into one or other of the regcnerator chambers by a plate valve 33 which also directs the spent gases from the regenerators into the flue 8 1, and there is a valve cover 35 by which the air admitted to the regenerator is regulated, and there is a damper 34 for regulating the strength of the draft through the regenerator and furnace.

The producer, the furnace, the regenerator chambers and the various passages between such parts are built according to the usual practice employed for the erection of such structures, and the various parts are strengthened by binders and bolts in the usual manner.

Then a producer and connected parts con structed substantially as herein described have been raised to the necessary temperature and are in working order a supply of fuel is fed to the producer chamber 1 if combustion is required to take place at the right hand end of the furnace, and to the charm her 2 if combustion is required to take place at the left hand end of the furnace, and the two chambers are fed alternately at suitable intervals.

If it is decided to feed the chamber 1 the gas outlet to that chamber is closed and the gas outlet to the chamber 2 is opened, and at the same time the air inlet and steam jet to the chamber 1 are opened and the air inlet and stem jet to the chamber 2 are closed. A charge of fuel is afterward fed to the chamber 1 which is then worked on the downdraft combustion principle and the products of combustion pass under the division wall 3 and come into contact with the air, or air and steam, supplied by the pipe 5. This bot-tom air supply produces and maintains a high temperature in the lower part of the producer and also supports combustion in the chamber 2 which is worked on the updraft combustion principle. The gases thus produced pass through the passage 10 to the right hand end of the furnace and are consumed by air admitted to the furnace through the passage 32 from the regenerative chamber 30. The gasesthen pass across the furnace and to the regenerative chamber 29 by way of the passage 31 and from the chamber 29 the gases pass to the flue 34 and to the chimney. When it becomes necessary to recharge the chamber 2, or the condition of the furnace contents, or of the regenerators requires the direction of the gas and air supply to be reversed, the lever 13 is operated to change the positions of the valves to both chambers. The direction of the draft through the producer is thus reversed and simultaneously the direction of the furnace operation is also reversed and fuel may then be fed to the chamber 2. This chamber is then worked on the downdraft combustion principle and the chamber l on the updraft combustion principle and this method is continued until another change is required. The air inlet valve to the regenerator chambers is also operated at each change in the direction of the draft through the producer.

This invention is herein described as having a single two chamber producer to each furnace but there may be two or more two chamber producers to each furnace provided the various chambers of the producers are so connected to the gas mains to the furnace that all the chambers working on the updraft principle at any particular time deliver the gas into the same gas main.

lVe claim 1. The combination of a twochamber gas producer in which one chamber works updraft while the other works down-draft, and vice versa and in which the lower portions of the two chambers communicate with each other, and each chamber is provided with means through which combustion-supporting gases are supplied, a furnace in which the gas made in the producer is consumed, a gas passage leading from the upper part of one producer chamber to one end of the furnace, and another gas passage leading from the upper part of the other producer chamber to the other end of the furnace, valves respectively controlling the flow of gas through these passages, other valves controlling the supply of combustion-supporting gases to the producer chambers, respectively, and means for operating the said valves, arranged to open the valve in the connecting passage between one of the producer chambers and the furnace, and also to open the supply valve for the other chamber, and simultaneously to close the valve in the other connecting passage and to close also the supply valve of the other producer cham- 2. The combination of a two-chamber gas producer in which one chamber works updraft while the other works down-draft, and vice versa and in which the lower portions of the two chambers communicate with each other, and each chamber is provided with means for supplying air thereto, a furnace in which the gas made in the producer is consumed, a gas passage leading from theupper part of one producer chamber to one end of the furnace, and another gas passage leading from the upper part of the other producer chamber to the other end of the furnace, valves respectively controlling the flow of gas through these passages, means controlling the supply of air to each producer chamber, and a connected lever system for operating the said valves and airsupplycontrolling means substantially simultaneously and arranged to close the controlling valve in the connecting passage of one chamber of the gas producer and also to close the means controlling the air supply to the other chamber of the gas producer and at the same time open the valve in the other connecting passage and to open the other air supply means.

3. The combination of a two chamber gas producer, a regenerative furnace, a gas passage from one producer chamber to one end of the furnace, a gas passage from the other producer chamber to the other end of the furnace, a gas valve to each gas passage, an air inlet and cover to each producer chamher, a steam jet and cock to each chamber, a valve operating lever and connections arranged to open or close the gas valve of one producer chamber and simultaneously close or open the air inlet and steam jet to the other producer chamber, regenerator chambers, and passages between such chambers and the furnace substantially as herein de 20 Goplea of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

